Raniere visiting Torino to continue exploration of the unknown gamma-ray sky

Raniere will be visiting the University of Torino over the next year, working with Prof. Francesco Massaro, in order to continue our group’s research to understand the unidentified gamma-ray sources observed with Fermi Large Area Telescope. In particular, he will use a suite of optical observations to try to pinpoint the nature of such sources.

Raniere’s visit will be funded by a FAPESP BEPE scholarship, grant number 2018/24801-6.

Roberta joins the group

I’m Roberta Duarte Pereira and I’m a physicist graduated at IFSC-USP. I just started my master’s degree in the Black Hole Group at IAG-USP under the supervision of Prof. Rodrigo Nemmen.
Since my childhood, one of my main passions in life is Astronomy, mainly Black Holes because they are so interesting and they always fascinated me. During my time in undergrad course, Computational Physics also called my attention. So I decided to connect both of my passions.
Recently, I started a project – under the supervision of Professor Rodrigo—in astrophysical simulations with deep learning. It’s a project that may bring some new insights about how we see numerical simulations nowadays and we could gain so much in this area!
I’m very happy and greatly motivated with this project and also for being in the Black Hole Group.

Roberta will work on applying machine learning and deep learning to numerical simulations of black holes, in collaboration with João Paulo Navarro from NVIDIA.

Welcome aboard, Roberta! We are glad you chose to come work in our group, and excited for the discoveries in the computational universe that will come from your project.

Roberta Duarte Pereira and Rodrigo Nemmen

Group funded by FAPESP

We are very happy to announce that our research group is receiving a large, competitive grant from FAPESP (Jovem Pesquisador, R$415k, grant 2017/01461-2). Besides including funding to support the group’s computational needs, this grant includes 1 PhD, 1 MsC and 2 undergraduate scholarships.

415k reais may not look like much when converted to dollars, but this amount of funding is quite hard to get lately in Brasil, especially for junior faculty.

Fermi Symposium + Collaboration meeting + NASA GSFC visit

The PhD students of the group working on gamma-ray observations—Fabio and Raniere—spent the last two weeks in Washington DC and surroundings. They went to the Fermi LAT Collaboration meeting at George Washington University, where they interacted with gamma-ray astronomers in the Fermi Collaboration. Raniere presented his ongoing analysis of the gamma-ray emission of a population of nearby AGNs.

Raniere de Menezes presenting his work on low-luminosity AGNs at the Fermi LAT Collaboration Meeting, Washington DC.

Following the Collaboration meeting, the students presented their research at the Fermi Symposium in Baltimore. Raniere presented a poster about his work on the pulsar populations in Milky Way globular clusters—which is about to be submitted for publication—while Fabio gave a talk describing his analysis of the gamma-ray emission from the Galactic Center on constraints on Sgr A* physics.

Fabio Cafardo presenting his work on the gamma-ray emission of Sgr A* at the Fermi Symposium, Baltimore.

After the symposium, Fabio and Raniere spent a couple of days visiting NASA Goddard Space Flight Center to discuss their research with GSFC scientists.

Their visit was possible thanks to NASA funds, grant xxxxxx.

Undergrad working on GPU research advances to international phase of research symposium

Matheus Tavares Bernardino, an undergraduate student working in our group, presented his work on the acceleration of black hole radiative transfer with OpenACC in GPUS at the undergraduate science symposium at USP and now will compete in the international phase of the symposium which will happen in November.

Congratulations, Matheus!

Matheus (right) and collaborator Alfredo Goldmann (left) happily showcasing the poster

Course on General Relativistic Magnetohydrodynamics by Yosuke Mizuno

Yosuke Mizuno (Goethe University, Frankfurt) taught an advanced course on general relativistic magnetohydrodynamics on August 13-17 at our institute. General relativistic magnetohydrodynamics—or GRMHD—is an essential tool to model high-energy astrophysical phenomena such as accreting black holes and relativistic jets—precisely the type of phenomena that our group loves and cherishes. This course was very useful for everybody in the group. 

The slides are available on this website.

Yosuke Mizuno lecturing about GRMHD at IAG USP. Credit: Rodrigo Nemmen.

His visit was supported by FAPESP grant 2013/10559-5.

Group will teach analysis of Fermi LAT data in dark matter school

On the final week of July, members of our research group (Fabio, Raniere & Rodrigo) will be teaching a lesson on the analysis of Fermi LAT gamma-ray observations in the School and Workshop on Dark Matter and Neutrino Detection at ICTP-SAIFR. In this hands-on activity, we will teach how to analyze gamma-ray data for a dwarf galaxy, do a simple estimate of the dark matter cross section and reproduce the analysis described in Ackermann et al. (2015).

It will be fun!

NVIDIA donation to the group

I am excited to announce that today we received a generous donation from NVIDIA through its GPU Grant Program, which will allow us to accelerate our science to another scale. We received a Quadro P6000 GPU, packing a powerful punch of 12 TFLOPS of FP32 processing power and 24 GB. This GPU will allow us to severely speed up the calculations of electromagnetic spectra from black holes that our group is developing. One estimate that always amazes me: this GPU is almost faster than the whole computer cluster—called Alphacrucis—that our institute hosts, which has 2300 CPUs (~20 TFLOPS) and was purchased in 2011.

Thanks to NVIDIA for the great gift, which will soon be put to good use. Let’s see those fans spin at maximum RPM! Science!

Some of the grad students in our group with the new GPU donated by NVIDIA. From left to right: Fabio, Gustavo, Raniere and Ivan.

Rodrigo happily holding the Quadro GPU